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Zinn Digital®

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Zinn® SEO: a fast WordPress SEO plugin that adds nothing to your pages

Zinn® SEO gets your WordPress site professionally optimised for search engines and AI assistants: titles, sitemaps, rich results, redirects and AI visibility, with nothing added to the pages your visitors load.

A search results page with a website at the top.

What it is

Zinn® SEO is our SEO plugin for WordPress. A guided setup covers titles and descriptions, sitemaps, structured data for rich results, redirects and AI visibility, and moves your settings over from Yoast, Rank Math and other SEO plugins.

  • Nothing added to the pages your visitors load
  • Rich results from one tidy set of structured data
  • Sitemaps, llms.txt and AI crawler control
  • Moves over from Yoast, Rank Math and others

Zinn® SEO

Free

Pro starts at 49 US$ a year and costs the same every year. The free plugin stays free.

Everything your SEO needs, in one plugin

No add-ons to bolt together and no second plugin for redirects or AI. It is all here, in your language, on phone and desktop.

Look right in search results

Set your titles and descriptions once with templates, see exactly how each page will appear in Google, and change any page on its own.

Get found, and stay found

Sitemaps that never slow your site, new pages sent to Bing and other search engines the moment you publish, and redirects that stop visitors hitting dead pages.

Show up in AI answers

Give ChatGPT, Claude and Perplexity a clear map of your site, decide which AI crawlers may read it, and add short answers they can quote.

Earn rich results

Help Google show breadcrumbs, product details and more under your result, with structured data that is checked for mistakes before Google sees it.

Write pages that rank

Live advice while you write, in any language, plus links to your own related pages suggested for you and added in one click.

Know what to fix first

One list for the whole site, most important first, with a time estimate for each job and one-click fixes for the simple ones.

See what you get

No bloat. Your pages stay as fast as they are today.

Zinn® SEO adds only what search engines read. No scripts, no stylesheets, and it never writes its own name into your pages. Here is what it adds to a visitor's page, checked on 9 October 2026.

scripts added to your pages
0
stylesheets added to your pages
0
plugin comments in your page code
0
extra database lookup per page, at most
1

See the proof

Thinking of switching?

See how Zinn® SEO compares with Yoast SEO, Rank Math, All in One SEO, SEOPress, The SEO Framework, Slim SEO, Squirrly SEO and SmartCrawl. Every fact about them links to the page it came from, with the date we checked it.

Bring your titles, descriptions and settings over from your current SEO plugin, check every page and switch over safely.

Move from Yoast, Rank Math or another SEO plugin

Compare SEO plugins

Move from Yoast, Rank Math or another SEO plugin
You decide which AI reads your site

You decide which AI reads your site

Want to be quoted in AI answers but not used to train AI models? One click does it. Every AI crawler is explained in plain words, so you know what you are allowing.

How to choose which AI crawlers read your site

Write in Google Docs™, publish from WordPress

Write where your team already writes. The Zinn® SEO add-on for Google Docs™ checks your SEO and readability as you type, then sends the document to WordPress as a draft. Nothing goes live until you publish it.

Available as a Google Docs™ add-on with Zinn® SEO Pro.

Write in Google Docs™ and send it to WordPress

What is free and what is Pro

Most sites never need to pay. The free plugin does the job. Pro is there when you want more, from 49 US$ a year.

What is free and what is Pro
FreePro
Title and description templatesYesYes
XML sitemaps with imagesYesYes
Video, news and multisite sitemapsNoYes
llms.txt and the AI crawler policyYesYes
Markdown version of every page for AI agentsNoYes
Structured data graph and the offline checkYesYes
Recipe, event, job, course and custom schema typesNoYes
The twelve standard SEO blocksYesYes
Comparison table, fact check, glossary and custom blocksNoYes
Focus phrases per pageThreeUnlimited
Link suggestions while you writeYesYes
Automatic links and the broken link checkerNoYes
Redirect manager and 404 monitorYesYes
Redirects before plugins load, and server rule exportNoYes
SEO lock for chosen pagesNoYes
Bulk editor with undoYesYes
CSV export and import of every SEO fieldNoYes
SEO revisions with one-click restoreNoYes
Branded social cards drawn on your serverNoYes
Google Docs™ add-on: write there, send to WordPress as a draftNoYes
SEO Manager and SEO Editor rolesYesYes
Any SEO permission for any roleNoYes

See every Free and Pro feature

Frequently asked questions

Will Zinn® SEO slow my site down?

No. That is the whole point. It adds 0 scripts, 0 stylesheets and no plugin comment to your visitors' pages, so your site is as fast with it as without it.

I already use another SEO plugin. Can I try this next to it?

Yes. While your other SEO plugin is switched on, Zinn® SEO stays out of its way so nothing is doubled up. Once you are happy, keep just one.

My site is huge. Will the sitemap cope?

Yes. Your sitemap is prepared in the background and loads instantly. On a test site with a million posts it was ready in 142 seconds using 115.9 MB of memory.

Should I block AI crawlers?

It depends which ones. Block the crawlers that answer questions and you vanish from AI answers that would have linked to you. Block the ones that only train AI models and you lose nothing. Zinn® SEO sets that up in one click.

Is my content sent anywhere?

No. The writing checks in the free plugin all run on your own site. Two optional Pro features reach outside, and only when you use them: one reads competitor pages you name, the other uses the AI service you connect with your own key.

Will it work with my WordPress?

Yes, if you run WordPress 6.4 or newer on PHP 7.4 to 8.5.

Do I need Pro?

Most sites do not. Pro adds unlimited focus phrases, a history of every SEO change, more rich result types, automatic links, a broken link checker, video and news sitemaps and spreadsheet editing, from 49 US$ a year.

What if I stop using it?

Delete the plugin and everything it added is removed. If you would rather keep your SEO details, tick Keep my SEO data if the plugin is deleted under Settings, Data first.

Can I copy my settings to another site?

Yes, for free. Export your settings to one file and import it on another site: titles, structured data, sitemaps, robots rules, sharing, breadcrumbs and which features are on all come over, and the site's own address is put in for you. You see every change before anything is applied, and a file with one value that is not allowed is refused whole. Keys and connections never leave the site.

How is the Pro link plan different from Link Whisper or LinkBoss?

Zinn® SEO Pro plans the links of your whole site from your own sentences: it never rewrites a sentence or adds new ones, puts each change in a revision, and takes a whole run off again in one click. Building the plan runs on your own site and costs nothing; the AI is used, paid per use or with your own AI key, only for important links with no natural words yet. By their own pages on 15 October 2026, Link Whisper Premium links keywords you set and finds orphan pages, and LinkBoss is a paid cloud service that charges for every link it adds that can rephrase sentences or add new ones; neither page describes undoing a run.

Can Zinn® SEO add FAQ structured data to all my posts at once?

Yes, for free. In Structured data, Fill with AI, the AI writes an FAQ, how-to steps, product details or an article summary from each page's own text, for every page that has none, a few pages per request. You see the cost first (measured on our own account: about $0.06 per 100 pages for FAQs), review every one with its check against schema.org and Google's rules, and undo a whole batch in one click. The FAQ shows on the page under its text, as Google requires. Google stopped showing FAQ rich results in May 2026, but Bing and AI assistants still read FAQ structured data. Pages with an FAQ of their own are left alone and cost nothing.

More in this category

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